Fatal error: Uncaught Error: Undefined constant "Patchwork\Utf8\MB_OVERLOAD_STRING" in /home/.sites/9/site4419340/web/webtrees/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php:45
Stack trace:
#0 /home/.sites/9/site4419340/web/webtrees/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php(26): Patchwork\Utf8\Bootup::initMbstring()
#1 /home/.sites/9/site4419340/web/webtrees/includes/session.php(177): Patchwork\Utf8\Bootup::initAll()
#2 /home/.sites/9/site4419340/web/webtrees/reportengine.php(33): require('/home/.sites/9/...')
#3 {main}
  thrown in /home/.sites/9/site4419340/web/webtrees/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php on line 45